package com.sky.service.admin.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.BaseException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.result.PageResult;
import com.sky.service.admin.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.Date;

@Service
public class EmployeeServiceImpl  implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();//

        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username); //

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        String md5DigestAsHex = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!md5DigestAsHex.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }

    @Override
    public void add(EmployeeDTO employeeDTO) {
        //本质：就是存一张表，把字段填上，唯一的逻辑就是搞清楚这些字段哪里来的
        //先检查有没有重名的
        Employee exist = employeeMapper.getByUsername(employeeDTO.getUsername());
        if(exist != null){
            throw new BaseException("账号已存在");
        }

        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //补充其他数据
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(Employee.STATUS_FORBIDDEN);
        employeeMapper.addEmployee(employee);
    }

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO dto) {
        dto.check();
        PageHelper.startPage(dto.getPage(), dto.getPageSize());
        Page<Employee> employees = employeeMapper.pageQuery(dto);
        PageResult result = new PageResult();
        result.setTotal(employees.getTotal());
        result.setRecords(employees.getResult());
        return result;
    }

    /**
     * 启用禁用员工账号
     *
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        employeeMapper.startOrStop(status,id);
    }

    /**
     * 根据id查询员工
     *
     * @param id
     * @return
     */
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }

    /**
     * 编辑员工信息
     *
     * @param employee
     */
    public void update(Employee employee) {
        employeeMapper.update(employee);
    }
}
